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Offlineticktock
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UV question for the gurus.
    #3234706 - 10/08/04 11:21 PM (12 years, 9 months ago)

Hey shroomers,

There was a thread the other day about blue leds to induce pinning. That lead to a discussion about optimum spectrum. Someone mentioned that ultraviolet is really bad.

That's great advice because UV tears up the DNA of molds and bacteria and the like. I had a prof who called it "ultraviolent" because it kills microscopic nasties.

Survey; Did you just say "Ahaa!"?

So It's bad for your crop, but might it be great to have a small lamp in your glove box? Of course, it would have to be turned off when friendly spores are in there. I did a google search, and here's an outfit that sells horribly expensive units for biological clean rooms and water sterilization.
http://www.ultraviolet.com

A little more research shows that there are itty bitty units for aquariums. Cheaper, but still not free by far.

I suspect that the flourescent jobs that light up your posters won't do squat. More spectrum research is in order.

Has this been kicked around here before? I searched for "ultraviolet" and came up with not much. Comments?

Ticktock


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Offlineticktock
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Re: UV question for the gurus. [Re: ticktock]
    #3234803 - 10/08/04 11:52 PM (12 years, 9 months ago)

Ok,

Looks like I asked this 3 hours after scatmanrav, and his was the millionth time asked. I still think that this is a bit different because I'm not proposing to use UV to sterilize the growth medium. It's to clean the glove box or the clean room. It would be a backup measure after taking all the usual precautions.

Sorry if I'm a newbie asking the usual question.

Ticktock


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Offlinescatmanrav
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Re: UV question for the gurus. [Re: ticktock]
    #3234895 - 10/09/04 12:15 AM (12 years, 9 months ago)

It certainly is different! But I didn't ask about it, only replied to the idea :smile:

If using to sterilize the glove box prior to using it (like spraying around lysol) and then switch off the light I would imagine it would work and be much safer then lysol but you would need to purchase one of them expensive do dads.


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Offlineticktock
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Re: UV question for the gurus. [Re: scatmanrav]
    #3234937 - 10/09/04 12:28 AM (12 years, 9 months ago)

Hi Scatmanrav,

Thanks, and sorry for the mistake. I freaked a bit when I saw that there was a similar posting so close.

This seems to be an expensive idea on the surface. There are a lot of UV sources. I'm hoping that someone here knows about a cheapie that's in the right wavelength.

Ticktock


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Offlinescatmanrav
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Re: UV question for the gurus. [Re: ticktock]
    #3234941 - 10/09/04 12:29 AM (12 years, 9 months ago)

:thumbup:

Good luck, I'll be watching the thread as well to see if anyone knows of a cost effective source.


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Offlinehyphae
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Re: UV question for the gurus. [Re: scatmanrav]
    #3234977 - 10/09/04 12:42 AM (12 years, 9 months ago)

All the best flowhoods have a UV and a fluoro and yes UV kills everything under it including sterilizing utensils. It is then turned off when working in the area.


--------------------
Getting the most out of your casings!, A pinning strategy.
Oyster Shell "Flour" $2 for 1lb. a hell of a deal :wink:
Not what is overlay but rather what overlay is
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"We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"


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InvisibleHydroToker
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Re: UV question for the gurus. [Re: hyphae]
    #3234998 - 10/09/04 12:47 AM (12 years, 9 months ago)


Check out the city of kelowna website. Maybe the Okangan University College site. No linkage but I belive Kelowna, BC where I used to live, cleans or plans to clean city water with UV.

It'll work.


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Offlinescatmanrav
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Re: UV question for the gurus. [Re: HydroToker]
    #3235029 - 10/09/04 12:57 AM (12 years, 9 months ago)

But is there a cost effective way of producing the UV light needed to do it?


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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InvisibleHydroToker
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Re: UV question for the gurus. [Re: scatmanrav]
    #3235057 - 10/09/04 01:08 AM (12 years, 9 months ago)

Hi scatmanrav ... I guess I missed the cost effective part :wink:

I'll bet for shroom cultivation it is not cost effective at all on the small/medium scale.  No evidence, just a good gut feeling.

There are easier/cheaper ways to go.  This site has many ideas (non of which i've tried ... but will soon) which seem like they will work just fine.

So... UV will work but why bother?  I simple blower/filter setup will most likely do just fine.


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Offlinescatmanrav
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Re: UV question for the gurus. [Re: HydroToker]
    #3235291 - 10/09/04 02:48 AM (12 years, 9 months ago)

Personally, I'm not asking for small or medium scale :smile: I'm thinking more of sterilization of a whole room before using it as if it were a glovebox. It could also be used in an airlock prior to entering a grow room to reduce contams on people and air going in. I don't know about the thread starter though. I'm unsure of how much a light like this would be and what requirments the light must have to meet these goals though.


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Offlineticktock
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Re: UV question for the gurus. [Re: scatmanrav]
    #3237396 - 10/09/04 09:49 PM (12 years, 9 months ago)

After a bit more looking around, it seems that we want a wavelength of about 250 nm. That's in a range that they call short wave UV.

I found out there are UV leds, which would have been perfect. All seem to be over 380 nm, or the long wave UV region. That puts them out of the running. Too bad.

What we want turns out to be low pressure mercury lamps. The cheapest I found was $9 for a 3 watt model. That's just the bulb, with no socket or power supply. It runs on 10.5 volts. I don't know if that has to be AC or DC, or if some sort of ballast is needed.

Another thing that I don't know is if the thing is safe to look at. EPROM erasers have an interlock, so the bulb won't come on unless the case is closed. It would be so not cool if someone's little brother went blind looking into a glove box. Something to consider.

There's all kinds of stuff that I still don't know, but will continue looking. Any help appreciated.

Ticktock


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OfflineKaptKid
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Re: UV question for the gurus. [Re: ticktock]
    #3237645 - 10/09/04 11:43 PM (12 years, 9 months ago)

This would be cool.For a glove box or a room.Bet the glove box would be cheaper.Will have to watch this thread.Is it worth the money???


--------------------
Child of the 60's, Tripping ever since.


:sun:


Edited by KaptKid (10/09/04 11:45 PM)


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Offlineticktock
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Re: UV question for the gurus. [Re: ticktock]
    #3237705 - 10/10/04 12:13 AM (12 years, 9 months ago)

Hi KaptKid,

Is it worth the money? I don't know yet, but here's what I'm thinking. (It might be all wrong). HEPA filters play the odds. Sooner or later they will catch the bits of evil dust that are floating about. If the little bugger decides to sit down on a surface, it's out of reach of the air filter, just waiting for you to move about and make it airborne. Lysol and the like take care of anything that you wipe it over, and some of what's in the air.

UV kills everything it sees, both airborne and on surfaces. Your glove box might be dusty, but all the dust is dead and harmless.

That seems like a pretty good thing. Labs and hospitals think it's worth it. The question is, worth what? Can we put something together on the cheap? What's cheap to one person might be expensive to another. Let's start at fifty bucks. Once it gets going, people might get interested. They will find other sources and help to drive the cost down.

JMO. Comments invited.

Ticktock


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